This profile was obtained by sounding a drift wall in a salt mine. Well visible signals have a shape of multiple hyperbolas originating from an adjacent drift. Distance between the two drifts is approximately 7.5 m. Sounding frequency: 500 MHz. Location area: Mirny, Russia.

Detection of a karst cavity:

Detection of a karst cavity in limestone below a loamy layer. The cavity (enclosed in a circle) is seen as alternating strips in the left-hand part of the profile. Loam is displayed as a continuous signal in the upper part of the profile. Sounding frequency: 300 MHz. Location area: Dead Sea beach, Israel.

Detection of three oil pipes:

Detection of three metal pipes buried in soil to the depth of 1.0 to 1.5 m. Each pipe generates a path signal having a hyperbolic shape whose apex corresponds to the pipe location. Sounding frequency: 900 MHz. Location area: vicinity of Daugavpils, Latvia.